4.5 Inch Full Cover Blue Zirconia Flap Disc High Durability Abrasive Disc for Stainless Steel Carbon Steel Polishing

Full cover zirconia flap disc is a heavy-duty industrial abrasive tool specially designed for heavy metal grinding, weld dressing and rough surface treatment, widely matched with all standard angle grinders in metal fabrication, machinery processing and maintenance industries. Different from ordinary uncovered flap discs, this product adopts a fully wrapped edge reinforcement design, which completely wraps the base edge of abrasive cloth pieces. This unique structural upgrade effectively solves frequent problems such as edge cracking, sand dropping and fragment splashing under high-speed heavy grinding, greatly enhancing operation safety and extending the overall service life of the grinding disc.

The disc adopts high-performance blue zirconia alumina abrasive grains as raw materials, which own outstanding toughness and stable self-sharpening ability. During continuous grinding, worn grits will automatically fall off to expose new sharp cutting edges, avoiding passivation and slipping that commonly seen on brown corundum products. It delivers strong cutting force and high material removal rate, perfectly coping with heavy grinding tasks on stainless steel, carbon steel, alloy steel and cast iron. Even under long-time high-pressure processing, the disc keeps stable grinding efficiency without rapid wear.